Credit: WANE -- The home at 1835 Sue Ave.,Warsaw, where the body of a 2-year-old was found buried in a shallow grave Thursday, Nov. 10, 2016, is shown. (Chad Hill/Kosciusko County Sheriff’s Department)

FORT WAYNE, Ind. (WANE) — An Indiana man has been arrested on a preliminary charge of murder in the death of his girlfriend’s 2-year-old he was reportedly babysitting, after police found the toddler buried in a shallow grave in a backyard.

Police were called just before 10:30 p.m. Thursday to a home on Big Chapman Lake, northeast of Warsaw, Ind., on a custody complaint.

There, Christopher Grimmett, 29, told investigators he was babysitting his girlfriend’s 2-year-old daughter, Adalin Stamper, early Thursday, but the girl’s maternal grandmother had picked up the child.

It led officers to Grimmett’s brother’s home on Warsaw’s west side, where Hill said Grimmett had been earlier in the afternoon with Adalin.

In the backyard of the home, sheriff’s deputies found a shallow grave where Adalin’s body was uncovered, Hill said.

The Kosciusko County Coroner was called to the scene. Police say the cause of Adalin’s death is still under investigation, pending an autopsy.

Scene technicians with the Kosciusko County Major Crimes Task Force were also called out.

Hill told NewsChannel 15 that Grimmett, in an interview with investigators, admitted to killing the girl and led them to her body. Inside the home, investigators found evidence that corroborated that. Officials did not indicate what that evidence was.

Grimmett is being held on a prosecutorial hold for murder in the Kosciusko County Jail.

Court records show Grimmett has prior convictions for resisting arrest, drugs and battery by bodily waste. Records also show he has also engaged in a custody battle for his own children.